WARNING: ZFS is considered to be an experimental feature in FreeBSD.
ZFS WARNING: Recomended minimum of RAM size is 512MB, expect unstable behaviour.
ZFS filesystem version 6
ZFS storage pool version 6
lock order reversal:
 1st 0xc2bb6620 zfs:&dr->dt.di.dr_mtx (zfs:&dr->dt.di.dr_mtx) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/dbuf.c:1865
 2nd 0xc2e592f8 zfs:&db->db_mtx (zfs:&db->db_mtx) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/dbuf.c:1836
KDB: stack backtrace:
db_trace_self_wrapper(c094df78) at db_trace_self_wrapper+0x25
kdb_backtrace(0,ffffffff,c0a5d500,c0a5d7f8,c09f8eac,...) at kdb_backtrace+0x29
witness_checkorder(c2e592f8,9,c2a84e01,72c) at witness_checkorder+0x586
_sx_xlock(c2e592f8,c2a84e01,72c,c1474788,728,...) at _sx_xlock+0x3e
dbuf_sync_list(c2bb6638,c31be800,c2a864ae,d194c8cc,c06c895c,...) at dbuf_sync_list+0x5e
dbuf_sync_list(c2e1f640,c31be800,d194cb84,c2a3be65,c28a1400,...) at dbuf_sync_list+0xde
dnode_sync(c2e1f570,c31be800,1737,0,c287e000,...) at dnode_sync+0x3a8
dmu_objset_sync(c2eebc00,c28a1400,c31be800,c295cd4c,c295ce00,...) at dmu_objset_sync+0xf6
dsl_pool_sync(c295cc00,1737,0,c2965000,1737,...) at dsl_pool_sync+0x6d
spa_sync(c2965000,1737,0,c295ccac,c2a887a2,...) at spa_sync+0x33f
txg_sync_thread(c295cc00,d194cd38) at txg_sync_thread+0x183
fork_exit(c2a5838c,c295cc00,d194cd38) at fork_exit+0xac
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xd194cd70, ebp = 0 ---
lock order reversal:
 1st 0xc2ddfc44 zfs:&db->db_mtx (zfs:&db->db_mtx) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/dnode_sync.c:417
 2nd 0xc2e3ca34 zfs:&zp->z_lock (zfs:&zp->z_lock) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c:73
KDB: stack backtrace:
db_trace_self_wrapper(c094df78) at db_trace_self_wrapper+0x25
kdb_backtrace(0,ffffffff,c0a5d7f8,c0a5d618,c09f8eac,...) at kdb_backtrace+0x29
witness_checkorder(c2e3ca34,9,c2a896ca,49) at witness_checkorder+0x586
_sx_xlock(c2e3ca34,c2a896ca,49,c2a85723,d194c9d8,...) at _sx_xlock+0x3e
znode_pageout_func(c2ddfc08,c2e3ca24,c2ddfc08,d194ca04,c2a3323d,...) at znode_pageout_func+0x1c
dbuf_evict_user(c2ddfc94,c2ddfc08,0,c2db8c60,d194ca14,...) at dbuf_evict_user+0x31
dbuf_clear(c2ddfc08,0,d194cad4,c2a42835,c2ddfc08,...) at dbuf_clear+0x1d
dbuf_evict(c2ddfc08,c2ddfc44,c2a85723,1a1,c2db8c48,...) at dbuf_evict+0xd
dnode_evict_dbufs(c2db8ae0,0,255,3c,0,...) at dnode_evict_dbufs+0x1fd
dnode_sync(c2db8ae0,c31be800,c2eebcd8,c2db8ae0,30,...) at dnode_sync+0x257
dmu_objset_sync_dnodes(c2e1f570,c31be800,1737,0,c287e000,...) at dmu_objset_sync_dnodes+0x29
dmu_objset_sync(c2eebc00,c28a1400,c31be800,c295cd4c,c295ce00,...) at dmu_objset_sync+0x112
dsl_pool_sync(c295cc00,1737,0,c2965000,1737,...) at dsl_pool_sync+0x6d
spa_sync(c2965000,1737,0,c295ccac,c2a887a2,...) at spa_sync+0x33f
txg_sync_thread(c295cc00,d194cd38) at txg_sync_thread+0x183
fork_exit(c2a5838c,c295cc00,d194cd38) at fork_exit+0xac
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xd194cd70, ebp = 0 ---
lock order reversal:
 1st 0xc481a428 zfs:&dn->dn_mtx (zfs:&dn->dn_mtx) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/dnode.c:875
 2nd 0xc2d0b220 zfs:&dr->dt.di.dr_mtx (zfs:&dr->dt.di.dr_mtx) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/dnode.c:876
KDB: stack backtrace:
db_trace_self_wrapper(c094df78) at db_trace_self_wrapper+0x25
kdb_backtrace(0,ffffffff,c0a5d898,c0a5d500,c09f8eac,...) at kdb_backtrace+0x29
witness_checkorder(c2d0b220,9,c2a856d6,36c) at witness_checkorder+0x586
_sx_xlock(c2d0b220,c2a856d6,36c,c481a428,c2a856d6,...) at _sx_xlock+0x3e
dnode_new_blkid(c481a3a0,1,0,c5a4a280,c5404384,...) at dnode_new_blkid+0x173
dbuf_dirty(c5404348,c5a4a280,1400,0,0,...) at dbuf_dirty+0x539
dmu_write_uio(c2e3e0c0,1d187,0,d195bc60,1400,...) at dmu_write_uio+0x155
zfs_write(d195bb98) at zfs_write+0x6e8
VOP_WRITE_APV(c2a8d540,d195bb98) at VOP_WRITE_APV+0x112
vn_write(c2c2fbd0,d195bc60,c3704580,0,c2b6c1b0) at vn_write+0x1f2
dofilewrite(c2b6c1b0,3,c2c2fbd0,d195bc60,ffffffff,...) at dofilewrite+0x7c
kern_writev(c2b6c1b0,3,d195bc60,2822fc00,1400,...) at kern_writev+0x36
write(c2b6c1b0,d195bd00) at write+0x45
syscall(d195bd38) at syscall+0x252
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (4, FreeBSD ELF32, write), eip = 0x2819376f, esp = 0xbfbfe69c, ebp = 0xbfbfe6c8 ---
lock order reversal:
 1st 0xc2966048 zfs:&zfsvfs->z_um_lock (zfs:&zfsvfs->z_um_lock) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:2936
 2nd 0xc295ccac zfs:&tx->tx_sync_lock (zfs:&tx->tx_sync_lock) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/txg.c:414
KDB: stack backtrace:
db_trace_self_wrapper(c094df78) at db_trace_self_wrapper+0x25
kdb_backtrace(0,ffffffff,c0a5d708,c0a5d9b0,c09f8eac,...) at kdb_backtrace+0x29
witness_checkorder(c295ccac,9,c2a887a2,19e) at witness_checkorder+0x586
_sx_xlock(c295ccac,c2a887a2,19e,c2a887a2,d0b55b64,...) at _sx_xlock+0x3e
txg_wait_open(c295cc00,2352,0,c2a887a2,ec,...) at txg_wait_open+0x2d
dmu_tx_wait(c347c880,c347c8b4,2351,0,c4acc7c8,...) at dmu_tx_wait+0xd9
dmu_tx_assign(c347c880,1,0,c347c880,317e0,...) at dmu_tx_assign+0x53
zfs_inactive(d0b55c30) at zfs_inactive+0xbc
VOP_INACTIVE_APV(c2a8d540,d0b55c30) at VOP_INACTIVE_APV+0x7e
vinactive(c3ab2440,c283abd0) at vinactive+0x75
vrele(c3ab2440,c2ac4068,c2a84437,332,c2ac4068,...) at vrele+0x15b
do_dnlc_reduce_cache(3,c2ab8038,c2ab8058,c2ab807c,5c7d3d61,...) at do_dnlc_reduce_cache+0x145
taskq_thread(c2ab8000,d0b55d38) at taskq_thread+0x101
fork_exit(c2a24dc4,c2ab8000,d0b55d38) at fork_exit+0xac
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xd0b55d70, ebp = 0 ---
lock order reversal:
 1st 0xc2f1786c user map (user map) @ /usr/src/sys/vm/vm_map.c:2387
 2nd 0xc3a745b0 zfs:&zp->z_map_lock (zfs:&zp->z_map_lock) @ /usr/src/sys/modules/zfs/../../contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:705
KDB: stack backtrace:
db_trace_self_wrapper(c094df78) at db_trace_self_wrapper+0x25
kdb_backtrace(0,ffffffff,c0a5fa08,c0a5d5f0,c09f8eac,...) at kdb_backtrace+0x29
witness_checkorder(c3a745b0,1,c2a8a913,2c1,0,...) at witness_checkorder+0x586
_sx_slock(c3a745b0,c2a8a913,2c1,0,1ff10000,...) at _sx_slock+0x3e
zfs_write(d19bb7d8) at zfs_write+0x2f3
VOP_WRITE_APV(c2a8d540,d19bb7d8) at VOP_WRITE_APV+0x112
vnode_pager_generic_putpages(c3ef3990,d19bb900,1000,5,d19bb8b0,...) at vnode_pager_generic_putpages+0x1df
vop_stdputpages(d19bb860) at vop_stdputpages+0x1a
VOP_PUTPAGES_APV(c2a8d540,d19bb860) at VOP_PUTPAGES_APV+0x8c
vnode_pager_putpages(c2f7e960,d19bb900,1,5,d19bb8b0) at vnode_pager_putpages+0x7b
vm_pageout_flush(d19bb900,1,5,2,da7a0246,...) at vm_pageout_flush+0x112
vm_object_page_collect_flush(c2f7e960,c155d7b0,2,5,10,...) at vm_object_page_collect_flush+0x281
vm_object_page_clean(c2f7e960,0,0,0,0,...) at vm_object_page_clean+0x187
vm_object_terminate(c2f7e960) at vm_object_terminate+0x5d
vnode_destroy_vobject(c3ef3990,c06ba32d,c3ef3a18,c2eea800,d19bbae4,...) at vnode_destroy_vobject+0x39
zfs_inactive(d19bbae4) at zfs_inactive+0x1d
VOP_INACTIVE_APV(c2a8d540,d19bbae4) at VOP_INACTIVE_APV+0x7e
vinactive(c3ef3990,c3c7ba20) at vinactive+0x75
vrele(c3ef3990,c2f7e960,0,c096991d,1a7,...) at vrele+0x15b
vm_object_vndeallocate(c2f7e960) at vm_object_vndeallocate+0xb8
vm_object_deallocate(c2f7e960,c2f7e960,0,c096901e,8e8) at vm_object_deallocate+0xbc
vm_map_entry_delete(c2f17828,c31ada18,c2f178b4,287f3000,2892c000,...) at vm_map_entry_delete+0x128
vm_map_delete(c2f17828,0,bfc00000,1,c2f17828,...) at vm_map_delete+0x11c
vm_map_remove(c2f17828,0,bfc00000) at vm_map_remove+0x42
vmspace_exit(c3c7ba20,c0a4f7a0,0,c09480b9,123,...) at vmspace_exit+0xb6
exit1(c3c7ba20,0,d19bbd2c,c08c0a7e,c3c7ba20,...) at exit1+0x45a
exit1(c3c7ba20,d19bbd00) at exit1
syscall(d19bbd38) at syscall+0x252
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (1, FreeBSD ELF32, sys_exit), eip = 0x2841e6ff, esp = 0xbfbfe69c, ebp = 0xbfbfe6b8 ---